Each taegeuk form is represented by a trigram (such as ☰); trigrams are divination symbols derived from the I Ching. The trigram for Taegeuk Il Jang is three solid lines. This symbol represents the concept of "Keon." Keon means "the heavens" or "the sky." Keon symbolizes the beginning of the creation of all things in the universe, so Taegeuk Il Jang symbolizes the beginning in the training of Taekwondo. (See the article Taegeuk for additional detail regarding the symbolism of this form.)